针对T800/5228A复合材料体系,采用改性聚芳醚酮(PAEK)增韧膜进行层间韧化,设计T800/5228E材料体系.冷场发射扫描电镜显示,T800/5228E层间具有富5228A/富PAEK双连续相结构.张开(Ⅰ)型与剪切(Ⅱ)型韧性试验表明,相比于T800/522A,T800/5228E的GⅠc与GⅡc数值分别提高了68.01％与30.97％,破坏断面显示“钉铆”效应,大量微裂纹以及富PAEK相塑性变形可能主导了上述增韧效果,而张开(Ⅰ)型相比于剪切(Ⅱ)型破坏模式更有利于提供富PAEK组分塑性变形空间则可能是GⅠc改善效果更佳的缘由.
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